a long, thin stretch of water that is artificially made either for boats to travel along or for taking water from one area to another

The Panama Canal provides a crucial shipping link between the Atlantic and Pacific oceans. 巴拿马运河是连接大西洋和太平洋至关重要的航道。

See also: alimentary canal

a narrow tube through which air, fluid, or other substances can pass

The alimentary canal is the path by which food enters the body, and solid waste is passed out. 消化道是食物进入身体，固体废物排出身体的通道。